1. Plate Tectonics Review
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2. 2. Describe the temperature change of the layers as you go to the center of the Earth. Increases 3. Describe how pressure changes as you go to the center of the Earth. 4. Why is the core of Earth so hot? Radioactive materials that are decaying, releasing heat.

3. 5. What scientist came up with the theory of continental drift?
Alfred Wegener
6. What is continental drift?
Pangea, a large continent broke up and the pieces drift into their current positions
7. What 4 pieces of evidence was used to support the scientist in #5’s theory?
Map Fit
Fossils
Same rock on two continents
Glaciers in deserts/Deserts in Alaska

4. 8. What is the name of the “supercontinent” of early Earth. Pangea 9
8. What is the name of the “supercontinent” of early Earth? Pangea 9. Transform 2 plates are sliding past each other horizontally 10. Convergent 2 tectonic plates are colliding (coming together) 11. Divergent 2 tectonic plates are moving away from each other

5. 12. What explains how large pieces of the lithosphere move and change shape? Plate Tectonics/Continental Drift 13. Label these parts on the diagram below: core, lithosphere, asthenosphere and convection current. 14. Which 2 plates are converging? (say letters) B & C 15. Which 2 plates are diverging? (say letters) A & B
Asthenosphere
Lithosphere
Convection Currents
Core
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6. 3. Volcanism, earthquakes, & Offshore trench
16. For each picture: 1. Label it as divergent, convergent or transform. 2. Name the plates involved –oceanic, continental 3. List its effects.
1. Convergent
2. Oceanic/Continental
3. Volcanism, earthquakes, & Offshore trench
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7. 3. Volcanic Islands, Earthquakes & Deep Ocean Trench
1. Convergent
2. Oceanic/Oceanic
3. Volcanic Islands, Earthquakes & Deep Ocean Trench
2. Continental/Continental
3. Mountain Building
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8. 2. Continental/Continental 3. Earthquakes
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1. Transform
2. Continental/Continental
3. Earthquakes

9. 17. Sea-Floor spreading creates new lithosphere
17. Sea-Floor spreading creates new lithosphere. Label each of the following as True or False:
(T or F) Explains continental movement
True
B.(T or F) Rocks closer to ridges are younger than rocks farther away.
C. (T or F) Continental rock is younger than oceanic rock.
False

10. 18. What are mid-ocean ridges
18. What are mid-ocean ridges? Areas of sea floor spreading Where do they occur? Plate boundaries Why didn’t Wegener use them as evidence for continental drift? Mid-ocean ridges were not discovered until WWII after his death.

11. 19. Explain how plate tectonics works at mid-oceanic ridges: First magma heats up in the asthenosphere and rises, then it Erupts along a fissure Then Pushes the plate apart and cools

12. ©2016 http://www.bucknell.edu/x17758.xml
20. Name two plates that are diverging: North American Plate & Eurasian Plate Name two plates that are converging: Nazca Plate & South American Plate